This bubble chart visualizes the relationship between R&D spending, net profit, and staff count for 19 tech companies. Each bubble’s position encodes R&D spending on the x-axis and net profit on the y-axis, while the bubble’s area scales with staff count, and color distinguishes the organization. Built with D3 v7, the chart uses `d3.scaleLinear` for the axes, `d3.scaleSqrt` for bubble sizing, and `d3.scaleOrdinal` with `d3.schemeSet3` for categorical colors. Interactive tooltips appear on hover, displaying each company’s exact metrics. The data is loaded from a CSV file and rendered as SVG.